This seems like a scam. If your intentions are purely good-I'm sorry no one has replied. The thing is people work hard for BTC and wont donate them to some unknown charity. Do you know if 100% of funds go to the charity? Because by law, to be called a "charity" you only need to use the funds for some majority of "charitable causes".
People may donate if you give more info on the charity and if you talk about why it matters so much to you. Also, they would probably like a receipt of some kind. The best thing you could do: prove you made the donation you say you did.
Just FYI. I hope your motives are good and things work out.
From wikipedia:
Amani Children's Village
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The association Amani Children's Village organization builds and operates villages for orphans in Tanzania and promotes the education and training of children. Until now, the first is Amani Children's Village in Kilolo , near the town of Iringa . A second village in Kitwiru also near Iringa, is under construction. Amani Swahili language and means peace.
Founded in 2001, the Amani Children's Village organization has set itself the task to build villages for orphans in Tanzania and operate. Because of the HIV epidemic in Africa, there are more than one million AIDS orphans in Tanzania, which require comprehensive care, as the extended family and neighbors in many places not in a position to provide these orphans with basic necessities. In 2001, with the construction of the first houses in the village children in Kilolo in the Iringa region was begun in the southern highlands of Tanzania. Today, the Amani Children's Village Kilolo of six children worldwide and is now complete.
It sounds like an legitimate charity. HOWEVER, "Bitcoins anonymously donated to this organization: 29.31224931 BTC" isn't 30 BTC. I also think that other people probably donated too.